Data transmission method to a wireless device which does not have an active data connection to a network

Abstract

The invention relates to a data transmission method between a first device (208) and a second device (100, 102), which is at the end of a wireless network connection and does not have an active data transmission connection to a network. The method comprises the steps of transmitting data addressed to the second device from the first device to the network; detecting in the network that the second device (100, 102) does not have an active data transmission connection; sending a stimulus message from the network to the second device (100, 102); receiving the stimulus message at the second device (100, 102); setting up a data connection between the network and the second device (100, 102) on the basis of the stimulus message; and transmitting to the second device (100, 102) the data addressed to it.

Description

FIELD OF THE INVENTION [0001] The invention relates to a data transmission method and system in which data is transmitted from one device to another, at least one of the devices being at the end of a wireless connection. BACKGROUND [0002] Today telephone systems are used for implementing also various other services than just conventional calls and new service concepts are being continuously designed. Mobile communications systems in particular offer a host of different services. These systems include the GSM and, in particular, the packet-switched GPRS system. The services are popular among the users because most users always carry their mobile phones and thus the services are also always available. Mobile phones can be used to access different Internet services that are used either directly from the phone, or from terminal equipment connected to the phone. [0003] An Internet connection is usually set up by a mobile phone opening an access connection to an Internet service, after wh...

AI Technical Summary

Benefits of technology

[0010] The method and system of the invention provide several advantages. In a preferred embodiment of the invention the stimulus is given using a different service or channel than the one that is to be woken up. This ensures versatile, flexible, safe and economical stimulus functionalities for the system. Moreover, the solution does not require a separate message for acknowledging the stimulus message, which saves costs. In solutions according to the preferred embodiments, the terminal device responds to a received stimulus message by activating the desired service or channel, possibly transmitting some data on the opened connection to provide a reliable confirmation of the successful accomplishment of the stimulus functionality.

[0011] Some preferred embodiments allow different authentications to be made for confirming that the stimulus message originates from an accepted source, allowing at the same time reliable identification of the terminal device.

Problems solved by technology

If the terminal equipment or mobile phone is not connected to the network and does not have an open data connection, it cannot be contacted in current systems.

The GPRS specifications determine a connection opening sequence that allows a terminal device to be activated from the network, but none of the system suppliers have implemented the method in their networks due to the security risks involved.

Images